Alcatel Carrier Internetworking Solutions Omni Switch/Router - Manual (Page 432)

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IEEE 802.1Q Sections Not Implemented
Some portions of the 802.1Q specification have not yet been implemented in the Omni
Switch/Router. These include the following:
• The tunneling of non-canonical 802.5 frames is not supported, since the Alcatel Omni S/R
handles such traffic by frame translations. This tunneling mode of operation involves the
Token Ring Encapsulation Flag in the 802.1Q header. It is not set or interpreted in the
Alcatel Omni S/R implementation.
• The Alcatel Omni S/R implementation does not support the SNAP-encoded Tag Header
(which is intended for Token Ring LANs). Only the Ethernet-encoded 4-byte Tag Header is
supported (and only Ethernet LANs are supported).
• Alcatel Omni S/R does not support the Generic Attribute Registration Protocol (GARP)
Multicast Registration Protocol (GMRP) and GARP VLAN Registration Protocol (GVRP) that
are defined in 802.1Q.